Rumelianさんのイラストまとめ

By the 9th-10th century Theodore and George were solidified as the Christian Dioscuri with a contemporary fresco from a church in Turkey depicting the two attacking a snake around a tree in a striking parallel to the earlier pagan stelae

The Serpent itself is an ancient representation of Chaos and the forces of nature in many cultures. In PIE it was associated with that and linked to rivers and dangerous currents. In descending cultures the battle of gods vs this water deity is a key myth...